PSPA had one and it actually fetched $1550. Didn't even have the right sized balls in it.
Quite a rare game with about 700 made. Played one myself and unless you are competing against somebody, it could get pretty old, pretty quick.
TNT amusements put up a good vid on this machine recently. Todd outlines the ability of the machine to run a tournament across X number of days and the machine can track all the results. Winner of the tourny would take half the machine earnings or some other form of redemption.